ex·ten·sion /ɪkˈstɛnʧən/ 名詞
1. The act of extending or the state of being extended; a stretching out; enlargement in breadth or continuation of length; increase; augmentation; expansion.
2. Physics That property of a body by which it occupies a portion of space.
3. Logic & Metaph. (a) Capacity of a concept or general term to include a greater or smaller number of objects; -- correlative of intension. (b) the class or set of objects to which a term refers; -- contrasted with intension, the logical specification which defines members of a class, being the set of attributes which are necessary and sufficient to recognize an object as a member of the class.
The law is that the intension of our knowledge is in the inverse ratio of its extension. --Sir W. Hamilton.
The extension of [the term] plant is greater than that of geranium, because it includes more objects. --Abp. Thomson.
4. Surg. The operation of stretching a broken bone so as to bring the fragments into the same straight line.
5. Physiol. The straightening of a limb, in distinction from flexion.
6. Com. A written engagement on the part of a creditor, allowing a debtor further time to pay a debt.
Counter extension. Surg. See under Counter.
Extension table, a table so constructed as to be readily extended or contracted in length.
n 1: a mutually agreed delay in the date set for the completion
of a job or payment of a debt; "they applied for an
extension of the loan"
2: act of expanding in scope; making more widely available;
"extension of the program to all in need"
3: the spreading of something (a belief or practice) into new
regions [syn: propagation]
4: an educational opportunity provided by colleges and
universities to people who not enrolled as regular
students [syn: extension service, university extension]
5: act of stretching or straightening out a flexed limb [ant: flexion]
6: a string of characters beginning with a period and followed
by one to three letters; the optional second part of a PC
computer filename; "most applications provide extensions
for the files they create"; "most BASIC files use the
filename extension .BAS" [syn: filename extension, file
7: the most direct or specific meaning of a word or expression;
the class of objects that an expression refers to; "the
extension of `satellite of Mars' is the set containing
only Demos and Phobos" [syn: reference, denotation]
8: the ability to raise the working leg high in the air; "the
dancer was praised for her uncanny extension"; "good
extension comes from a combination of training and native
9: amount or degree or range to which something extends; "the
wire has an extension of 50 feet" [syn: lengthiness, prolongation]
10: an additional telephone set that is connected to the same
telephone line [syn: telephone extension, extension
11: an addition to the length of something [syn: elongation]
12: an addition that extends a main building [syn: annex, annexe,